£999.00List Price: £1199.00

Pictures are for illustration and some components and finishing kit of this build may be different. Please refer to the detailed spec sheet before placing an order.

Stirling Moss

Chilli

Nemo

How To Order

Select Your Size And Colour From These Options:

Build option

Small

Medium

Large

X-Large

Chilli

Buy Now!

Buy Now!

Buy Now!

Buy Now!

Nemo

Buy Now!

Buy Now!

Buy Now!

Buy Now!

Stirling Moss

Buy Now!

Buy Now!

Buy Now!

Buy Now!

All our bikes are built individually to order. If you want to change any part of the spec to suit your needs then get in touch.'Buy Now' means your colour, size and all components are in stock and ready to go. You can buy it now.
'Building / Shipped from' means our next batch of frames is on its way and available for order. Placing an order guarantees a Sonder bike from our next batch. We'll build, check, pack and despatch your Sonder within 10 working days of this date.
'Sold out' means we're still confirming our next delivery and will be available to order shortly
'NA' means the size option is not available for this frame

Frontier Frame

Size

Colour

Quantity

Please allow 10 working days for us to build, check, pack and despatch your Sonder.

We act as a credit broker and not a lender and can introduce you to Close Brothers Retail Finance. Terms and Conditions apply. Finance subject to status. Applicants must be 18 or over and resident in the UK. Finance provided by Close Brothers Retail Finance, a trading style of Close Brothers Limited – a subsidiary of Close Brothers Group Plc. Registered Office: 10 Crown Place, London, EC2A 4FT.

At a glance

6061 aluminium frame

Relaxed riding position for comfort and performance

Rockshox Recon suspension forks

Hydraulic disk brakes

QR Boost 141mm rear spacing

Rear mudguard and pannier rack mounts

650b+ and 29” wheel size compatible frame

Frontier is our multi-activity hardtail mountain bike. Ride hard at the trail centre, load it up for a midweek bikepacking trip, pocket your passport and continue around the world. With full rack mounts at the back and multiple boss mounts on the fork, Frontier is an adaptable off-road explorer.

The geometry is for long day comfort but it’s no slouch.

The 6061 aluminium frame provides a durable and stiff chassis giving a responsive kick as you demand power when the slope steepens or enjoy feedback and precision through the corners.

Available as a fully rigid or with 100 mm suspension fork. Set it up for XC race speed or for all day big mile comfort.

Aluminium frame

Wide tyre clearance

Extra width between the chainstays gives you the choice of running 27.5+ tyres up to 3 inches or 29 inch tyres up to 2.4 inches.

Boost axle width

The Frontier frame is designed around QR Boost 141 mm rear spacing providing the benefit of stronger, stiffer and more efficient wheels. Seatstay mounted disc brake for clean lines and damage protection.

Pannier ready

Responsive when loaded - Frontier is more than happy to shoulder a pannier.

Frame spec

Frame Weight (kg): S: 1.7; M: 1.8; L: 1.86; XL: 2.0

Fork Weight - uncut (kg): 1.0

6061 Aluminium frame

Optimised for rigid or 100 mm suspension forks

Internal cable routing

QR Boost 141 rear spacing for wheel strength and optimal chainline

Fork built around QR Boost 110 mm spacing

Threaded 73 mm BSA BB shell for no-creak assembly

Chainstay mounted disc brake for clean lines and damage protection

Adventure cage compatible downtube mount

Full rack mounts and multiple boss mounts on rigid fork

Clearance for 3 inch 650b+ or 2.5 inch 29er tyres

Reverb Stealth port

EN 14766 compliant

It is important to get the right size bike, if the bike fits you well it will be faster, more comfortable and easier to handle. Generally we recommend:

Small

Riders between 5ft 2in and 5ft 7in

Medium

Riders between 5ft 6in and 5ft 10in

Large

Riders between 5ft 9in and 6ft 2in

X-Large

Riders 6ft 2 and over

Size

Small

Medium

Large

X-Large

ST - Seat tube

380

430

480

520

TT - Top tube

566

602

622

647

HT - Head tube

110

130

130

150

HA - Head angle

68

68

68

68

SA - Seat angle

73

73

73

73

CS - Chainstay

435

435

435

435

BB - BB drop

50

50

50

50

FO - Fork offset

51

51

51

51

WB - Wheelbase

1089

1127

1147

1174.5

SO - Stand over

RE - Reach

390

420

440

460

SK - Stack

Build

SRAM NX1, 1 x 11

Frameset

Frame

Sonder Frontier Frame

Fork

Recon

Headset

Love Mud Rumour, Integrated Sealed Bearing, Tapered

Seat clamp

Love Mud Vice, 34.9 mm

Group set

Brake Front

SRAM Level 800mm

Brake Rear

SRAM Level 1400mm

Rotor Rear

Avid Centreline 160 mm

Rotor Front

Avid Centreline 180 mm

Rear mech

SRAM NX1 Rear Derailleur 1x11 Long Cage

Shifter Rear

SRAM NX1 11sp

Chainset

SRAM NX1 Chainset 1 x Xsync 32T

Bottom Bracket

SRAM GXP

Chain

SRAM PC1110 Chain 118 Links

Cassette

SRAM PG-1130 11sp

Finishing Kit

Stem

Love Mud Piskie, 31.8 mm

Seatpost

Love Mud Membar, 31.6 mm

Saddle

Love Mud Abode

Tape/Grips

Love Mud Grabby

Handlebar

Love Mud Aspect Riser, 780 mm

Wheelset

Wheels

Love Mud Rumpus 650b+ Wheelset

Tyres

WTB Ranger 2.8 Comp

Tubes

WTB Inner Tube Presta 27.5, 2.8-3.00

Weight

Frame only

S: 1750 g; M: 1805 g; L: 1935 g; XL: 2040 g

Frame

S: 1.7 kg; M: 1.8 kg; L: 1.86 kg; XL: 2 kg

Fork

1.09 kg

Built

12.5 kg; M: 12.7 kg; L: 12.8 kg; XL: 13.3 kg

Pedals not included with full builds

The build kits we use are tried and tested. It's stuff we know just works together. But if you want to change any part of the spec ... no matter how small ... then get in touch. Any change is no problem. Working with you to create dream bikes means we've built some pretty special bikes along the way.

Swapouts

You can interchange Love Mud components on this build at no additional cost. So if you want a different length of stem, a particular saddle or bar then let us know in the notes section in the checkout and we'll get in touch.

Upgrades

We hold big stocks of SRAM, Rockshox, WTB and regular build with Shimano, Hope, Cane Creek. We'll build your Sonder with any part that suits your needs. Give us a call and we will help spec and build a Sonder. With the same experienced mechanic helping throughout your build you know who to call if there's anything you want to know.

Alpine Bond Warranty

Our titanium frames are handmade and come with a 10 year frame warranty. Our hand welded 6061-T6 alloy triple butted frames and carbon frames come with a 5 year manufacturing defect warranty. All our bikes are built, checked and signed off by Cytech trained mechanics before being despatched to you in a custom-made bike box.